Fantasy: Kill Monsters to Become Stronger, Start by Killing Chickens and Fish

[Fantasy + System + Funny] Jiang Yi took the memory of the earth and accidentally activated the God-defying Killing System. Killing monsters will level you up, killing people will unlock equipment, and killing people with higher levels will double your experience! Others can hardly break through ten years of hard work, but he can gain experience by killing chickens and fishes; While others are desperately fighting for a low-level martial arts book, he can casually kill monsters and reveal spiritual-level techniques and heaven-level artifacts; When others are humiliated, they can only swallow their anger. He punches the provocateurs, slaps the evil slaves, and steps on the proud ones, all the way to violent revenge!